West Sussex · England
Sand mastic for sash & case windows in Hurstpierpoint, West Sussex
Window and door surrounds in Hurstpierpoint need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Open joints round the window box
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Keep modern sealant off the mastic
- Do not paint over the new mastic
- Have rotten timber repaired before new mastic goes in
- Clear gutters so water does not pour onto the windows
Do not touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall so early renewal protects both.
How we handle sand mastic in Hurstpierpoint
We work across Hurstpierpoint renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We work on stone surrounds, brick reveals and sash and case windows, and common reasons people get in touch are draughty sash windows at the surround and mastic dropping out of the joint.
Homes around Hurstpierpoint range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
You get a one-year guarantee, the same in Hurstpierpoint as everywhere else we work.
- Where
- Hurstpierpoint (BN6)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a single window, longer for several, and the area is left clean. In a smaller place like Hurstpierpoint, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
Get a quote
If you are in Hurstpierpoint and need sand mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
What happens if it’s left?
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a smaller place like Hurstpierpoint, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
Why choose Mr Mastic in Hurstpierpoint
- Fully insured
- Homes, businesses and hotels
- Old sealant always removed completely
- An ARBOMaster approved applicator
Take a look at our cost guide and our reviews.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Also near Hurstpierpoint
Other services in Hurstpierpoint
How we quote for sand mastic
Jobs vary more than people expect. The main factors:
- Which sealant suits the joint
- The number and length of the joints
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What we need to know
There’s no need for technical detail. Just tell us:
- The type of property
- How we’d reach the joints
- A few photos by email, if you can
- Where the property is
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Hurstpierpoint homes and the weather
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Hurstpierpoint Baptist Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Hassocks station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. Schools such as St Lawrence CofE Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Hurstpierpoint is about 3 miles south-west of Burgess Hill, in West Sussex. For sand mastic in and around Hurstpierpoint, please ring 0345 464 0079 or send us an email for a quick quote. We cover West Sussex from our Crawley base, Hurstpierpoint included. Hurstpierpoint is one of 371 places in West Sussex we cover. We also work in Brighton, around 7 miles away.
Work in BN6 is quoted and booked the same way as anywhere else. We cover properties on High Street, Marchants Close and Marchants Road. Being close to the B2116, Hurstpierpoint is simple for us to get to for sand mastic. Neighbouring places we cover for sand mastic include Hurst Wickham (1 mile east), Sayers Common (1 mile north-west), Hassocks (1 mile south-east), Keymer (2 miles south-east) and Goddards Green (2 miles north). Further out, we also cover Crawley (12 miles north), Horsham (11 miles north-west), Worthing (12 miles south-west), Haywards Heath (6 miles north-east), Burgess Hill (3 miles north-east) and East Grinstead (15 miles north-east).
Near you in Hurstpierpoint
Around Hurstpierpoint, our work takes us to homes and buildings near The Poacher pub and Downlands Community School. The closest station to Hurstpierpoint is Hassocks station, about 1.5 miles south-east of the centre. Other landmarks nearby include The Dene Hospital (2.1 miles north) and Clayton Castle (2.3 miles south-east). The countryside around Hurstpierpoint includes Bedelands Farm Nature Reserve and Wolstonbury Hill.
When it isn’t the sealant
New sealant can’t fix everything, and we’ll tell you before work begins. It will not solve:
- Broken panes
- Masonry that needs repairing
- Sash cords, weights and draught-proofing of the sashes
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
- Sash and case windows
- Tenement windows
Hurstpierpoint: your questions answered
Can you help a landlord with a rental near Hassocks station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover Hurstpierpoint for sand mastic?
Yes, Hurstpierpoint is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
Do you offer different sealant colours?
Most of the time, yes. We’ll tell you which colours the right product comes in and agree one before any work starts.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.